According to the Merriam-Webster dictionary: 1) transcutaneous electrical nerve stimulation: electrical stimulation of the skin to relieve pain by interfering with the neural transmissions of signals from underlying pain receptors. 2) transcutaneous electrical nerve stimulator: a device used for TENS.

Some estimates date the earliest uses of TENS technology to the 16th century, and the earliest portable TENS unit available in 1974.

A TENS may help because it is, as the FDA states, "TENS, To be used for temporary relief of pain associated with sore muscles and aching muscles in the shoulder, waist, back, neck, upper extremities (leg) due to strain from exercise or normal household work activities. "

Some of the other benefits of managing pain with a 789tens TENS unit may include: drug-free pain management, easy to use, affordability, 789tens Lifetime Warranty, and excellent customer care.

Some of the many users of TENS are people suffering from chronic back pain, physicians, nurses, physical therapists, occupational health therapists, fitness trainers, athletes, those recovering from injury or surgery, those needing help with workout recovery, and people suffering from stress. 

No, doctor's prescriptions are not required for buying or using any 789tens TENS units. 

Some insurance policies may cover TENS units and accessories, so check with your insurance company.

For some people, their Medicaid or Medicare may cover TENS units and accessories, so check with your agent.

Yes, areas to avoid include (and are not limited to): over the heart, on opened or closed eyes, inside the mouth, genital area, on the anus, on fingernails or toenails, cranium area, and on wounds or irritated skin.

Yes, conditions include (and are not limited to): pregnancy, cancers, muscle degenerative diseases, neuro degenerative diseases, heart disease, dermatological conditions.  Please first consult with a physician before using or purchasing a TENS unit.

Even though it is not required, we highly recommend that you first consult with a physician, and ensure that it is safe for you to use TENS units. 

Please stop using your TENS and consult a physician immediately. 

No, please first consult with a physician before using or purchasing a TENS unit. 

It may not be safe, so please first consult with a physician before using or purchasing a TENS unit. 

No, DO NOT use any TENS units in or near water.  WARNING: It is very dangerous to use TENS units (or any electrical device) in or near water, and doing so may result in serious injury or death. 

To optimize use of your TENS, we recommend that you change your TENS pads after (whichever happens first) about 100 uses, or when the pads do not stick to your skin properly.  If your TENS pads are coming off slightly easily, then you should replace them with new pads. 

No, all TENS pads must be used on bare skin that is clean and dry. 

Our TENS pads (Mini, Standard, or Extra Large) must be used in pairs, such as 2 or 4 pads at once, otherwise they will not work properly.

This may help to optimize the TENS pads' conductivity and longevity.

Remove larger pieces of debris if it will not disrupt the proper use of the pads, otherwise you should replace them with new pads.

These accessories offer a less intense kind of sensation than the TENS pads, and it may be necessary to increase the strength when using these accessories.

Yes, at your own risk, you can wash and dry your TENS garments: machine-wash on delicate cycle and in cold water, and hang dry - DO NOT machine-dry.

Brush or wipe off dirt, dust, or debris, and DO NOT use water or any liquids.  We recommend clean feet when using our Slippers.

No, our TENS Slippers must be used with bare feet that are clean and dry.

The 789tens TENS Wireless TENS Remote uses lithium battery #CR2032.

Your 789tens Lifetime Warranty should be registered when you complete your order.  You can also register it 1) online here, 2) by filling out and mailing in your 789tens Lifetime Warranty card, or 3) in-person with one of our 789tens retailers. 

No, the 789tens Lifetime Warranty only covers your 789tens TENS unit. 

Please check out our "789tens Lifetime Warranty" page for details and instructions.  Click here for printer-friendly detailed instructions (in PDF format).

No, we do not pay for your return shipping.

Yes, we will credit the return shipping of your defective 789tens TENS unit under BOTH conditions: we receive notice of your defective unit within 30 days of its delivery date, and we confirm that your unit is defective.  Please check out "789tens Returns Policy" for more details.

We pay for shipping repaired or exchanged TENS units within the 50 states, U.S. territories, and AFO/FPO/DPO.  For other international shipments, please check out "789tens Shipping Rates" for details.

No, there are no restrictions on where you can use your 789tens TENS unit.

No, you can use any brand of TENS accessories with your 789tens TENS unit.

The conditions under which your 789tens Lifetime Warranty can be voided are, when your 789tens TENS unit ceases to exist (including theft), or when mandated by court or law.

FDA is the United States Food and Drug Administration.  Please visit www.fda.gov for more information from the FDA.

The main difference is that, "FDA Approved" products have been proven to be safe (by a much higher and longer standard than for "Cleared" products), and "FDA Cleared" products have been proven to be "substantially equivalent" to a product already legally marketed for the same use.  Please visit www.fda.gov for information from the FDA.

Yes, all 789tens TENS units are FDA-cleared.

Yes, 789tens is an FDA-registered company.

Snap, bend, or press the metal disc until the crystals are activated (it may take more than 1 attempt, especially when the pack is brand new).  When pressed correctly you will hear a clicking noise.  The pack will start to change color as it begins to heat up.

Massaging the crystals helps the rest of the pack to heat up more quickly, and it makes it easier to shape the pack to better fit your body.

Activated packs must first be boiled (and the crystals melted), and then activated again for instant heat (or for cool, place in the refrigerator only).  Please check out "789tens Reusable Instant Heat Instructions" below for details.

After your activated heat pack cools down, it will begin to solidify.  In order to reuse the pack it must be boiled in water to turn the contents back into a liquid.  Depending on the size of the pack, this process normally takes between 5 to 25 minutes.

Instructions for boiling your heat pack:  

Depending on the size of your pack (and the temperature of the water), it may take 5 to more than 30 minutes to completely melt the hardened crystals.

Small heat packs (Palm, Heart, Round) normally take around 5 to 10 minutes to boil.

Larger packs (Neck & Shoulders, Long Back) normally take 10 to 20 minutes to boil.

Wrap your packs in a towel, and make sure that the packs do not touch the pot directly.

If used as directed, we estimate that you may be able to reuse (reactivate) your pack at least 100 times.

Yes, place your pack (not activated) in the refrigerator for at least 1 hour prior to using it.

No, DO NOT place any packs in the freezer.  Doing so may cause the metal disc to be activated, the crystals may expand beyond the casing's limits, and the pack may burst.

Yes.

Store your packs in a cool dry place that is not in direct sunlight, and will keep pack protected from hard or sharp piercing objects.

Properly dispose of your damaged pack (and any leaked or spilled contents) in the garbage.  DO NOT dump or flush any part of your pack in toilets, drains, or waterways.  DO NOT burn or incinerate any part of your pack.

No, DO NOT place any packs in the microwave, as this is very dangerous, and may cause serious injuries.

Clean packs by gently wiping with a soft and clean damp cloth (use mild soap if necessary).  DO NOT put packs in the washer, dryer, or dishwasher.

It is filled with a nontoxic sodium acetate solution.  DO NOT eat any part of your pack.

No, all packs should be packed with check-in luggage (even when packs are hardened).

The heat pack was not boiled for a long enough time.  

The heat packs must be boiled for long enough to ensure that the contents are 100% liquefied.  If the packs are removed from the boiling water too soon, they may become solid again.

If in doubt then leave the packs in the boiling water for a few extra minutes.  Small packs (heart, palm, round) normally take 5 to 10 minutes.  Larger packs (Neck & Shoulders, Long Back) normally take 10 to 20 minutes.

Once you get used to this process, it will become very easy in the future!

"Aloha" is Hawai‘ian for "hello", "good-bye", "love", and "I love you".  In Hawai‘i, the meaning is unique to the beholder.

"Hau‘ula" has been translated as Hawai‘ian for "red hibiscus tree".  In Hawai‘i, the meaning is unique to the beholder.

"Kuleana" is Hawai‘ian for right, duty, responsibility, or accountability.  In Hawai‘i, the meaning is unique to the beholder.

"Mahalo" is Hawai‘ian for "thank you" or "thanks".  In Hawai‘i, the meaning is unique to the beholder.

"Ohana" is Hawai‘ian for "family".  In Hawai‘i, the meaning is unique to the beholder.

We look forward to hearing from you!  Please give us your feedback by contacting us directly through our Contact Us page, or join the 789tens Community Forum.

We would appreciate the opportunity to help you become a retailer of 789tens products!  Please Contact Us and let us know.